Thread: D2a Fuel Filter

My 03 D2a has the wiring and the sensor

My (built) 02/2004 D2a still has the wiring loom (they all do I believe), but it's been tucked up away ontop of the chassis rail. It still has the sensor screwed into the bottom on the fuel filter (they all did), but the function has been disabled in the ECU. The fuel warning light still illuminates during the pre-flight check.

In the "late" update models it doesn't have the "water-in-the-fuel" warning feature. It was removed due to the high incidence of false triggering.

I guess, in theory, it should be possible to re-enable the function using testbook or similar, as all the required parts are still there ... it just needs to be reconnected and turned on in the ECU.

The wiring to the plug for the sensor that fits to the bottom of the filter has been removed in the vehicles that do not have the sensor fitted.
As Fluids has said it was for this reason.
Cheers

Originally Posted by sniegy

The wiring to the plug for the sensor that fits to the bottom of the filter has been removed in the vehicles that do not have the sensor fitted.
As Fluids has said it was for this reason.
Cheers

Thanks Pete & Fluids - so, what you are saying is that if I do get water in the fuel, I will not get any electronic warning?

So, what happens if I get water in my fuel - will this not cause engine hydraulicing ?

Cheers,

Franz

No warning!

Its possible ... but just be careful where you get fuel. If filling from jerrys, I always decant the last 1/4 or so to a vessel if I can, to check to see if there's water ... it comes out of the jerry last, not first ... and periodically drain the fuel filter with a bowl under it ... to check for water.

In 2.5yrs I've drained no water when checking the filter.

Originally Posted by Fluids

No warning!

Its possible ... but just be careful where you get fuel. If filling from jerrys, I always decant the last 1/4 or so to a vessel if I can, to check to see if there's water ... it comes out of the jerry last, not first ... and periodically drain the fuel filter with a bowl under it ... to check for water.

In 2.5yrs I've drained no water when checking the filter.

I've never had an issue with the light coming on and mines connected.

I do wonder though if the fuel temp has any bearing on the water possibly evaporating or slightly mixing to a certain degree. I've usually got a fuel temp of around 65C and the filter is always fairly hot to touch, either that or I keep getting good quality fuel.

Unlike in a petrol however, don't use a fuel system cleaner if you do have water in the tank as it will absorb it and send it thru the injection system which is exactly what you don't want.

Patiently waiting for synthetic fuel. If they can do oil......

Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...

Originally Posted by Franz

Thanks Pete & Fluids - so, what you are saying is that if I do get water in the fuel, I will not get any electronic warning?

So, what happens if I get water in my fuel - will this not cause engine hydraulicing ?

Cheers,

Franz

I love my Disco but this is the sort of engineering that gives the pommys a bad name. Come up with a good idea (water in fuel sensor), do a poor job of component selection, create a problem then remove the functionality.
Why did they not just get a better sensor. Its a great feature, mine has been fine and it has detected water once.

Gordo
2003 D2a TD5 Auto, just ticked over 296,000kms

Originally Posted by LOVEMYRANGIE

I've never had an issue with the light coming on and mines connected.

I do wonder though if the fuel temp has any bearing on the water possibly evaporating or slightly mixing to a certain degree. I've usually got a fuel temp of around 65C and the filter is always fairly hot to touch, either that or I keep getting good quality fuel.

Unlike in a petrol however, don't use a fuel system cleaner if you do have water in the tank as it will absorb it and send it thru the injection system which is exactly what you don't want.

Patiently waiting for synthetic fuel. If they can do oil......

Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...

My first D2 had the sensor and in the 4 years I owned it, the light never came on.

Reason I raised the topic was that a mate just had his light come on in a Cruiser and that got me thinking.

Would there be any symptoms if there was water in the fuel?

Cheers,

Franz